The SINAMICS G120D distributed inverters are modular inverters for standard drives. Each SINAMICS G120D comprises two operative units – a Power Module and a Control Unit.

PM250D Power Module with line supply and motor connections and CU240D-2 Control Unit

Power Modules

The following PM250D Power Modules are available for the SINAMICS G120D distributed inverters:

PM250D Power Modules

PM250D Power Modules (0.75 kW to 7.5 kW) have an innovative circuit design which allows line-commutated energy recovery back into the line supply. This innovative circuit permits generated energy to be fed back into the supply system and therefore saves energy.

Control Units

A Control Unit performs closed-loop control functions for the inverter. In addition to the closed-loop control, it has additional functions that can be adapted to the particular application through parameterization.

The following Control Units are available for SINAMICS G120D distributed inverters:

CU240D‑2 Control Units

The CU240D‑2 Control Units can be used to implement applications with speed/torque control. Several Control Units are available in different versions:

• CU240D‑2 DP в†’ PROFIBUS
• CU240D‑2 DP‑F в†’ PROFIBUS fail-safe
• CU240D‑2 PN в†’ PROFINET
• CU240D‑2 PN‑F в†’ PROFINET fail-safe
• CU240D‑2 PN‑F PP в†’ PROFINET fail-safe Push Pull
• CU240D‑2 PN‑F FO в†’ PROFINET Fail-safe fiber optic

CU250D‑2 Control Units

CU250D‑2 Control Units can be used to implement applications with positioning requirements in the drive. Several Control Units are available in different versions:

• CU250D‑2 DP‑F в†’ PROFIBUS fail-safe
• CU250D‑2 PN‑F в†’ PROFINET fail-safe
• CU250D‑2 PN‑F PP в†’ PROFINET fail-safe Push Pull
• CU250D‑2 PN‑F FO в†’ PROFINET fail-safe fiber optic

Supplementary system components

Intelligent Operator Panel IOP‑2 Handheld

The IOP‑2 Handheld supports both newcomers and drive experts. Thanks to the large plain text display, the menu-based operation and the application wizards, it is easy to commission, diagnose and locally control standard drives.

Memory card

The parameter settings for an inverter can be stored on the SINAMICS SD memory card. When service is required, e.g. after the inverter has been replaced and the data have been downloaded from the memory card the drive system is immediately ready for use again. The associated slot is located on the rear of the Control Unit.

Mini USB interface cable for communication with a PC

For controlling and commissioning an inverter directly from a PC if the appropriate software (STARTER commissioning tool V4.3 and higher or SINAMICS Startdrive) has been installed.

Connecting cables for the Control Units

Flexible plug-in cables to transfer data between the Industrial Ethernet stations or PROFIBUS stations, as well as to supply power to the Control Unit.

Connecting cables for the Power Modules

Connector sets to connect to the line supply and the outgoing motor feeder are available as accessories as well as pre-assembled motor cables for connection to the motor.

Spare Parts Kit

A Spare Parts Kit is available which comprises small parts such as seals, caps, PROFIBUS address windows and screws.

Replacement fan

A replacement fan is available, which comprises a pre-mounted unit with cover, fan and screws.